How to Write a Cover Letter From the Job Description (Short, Modern, Honest)

Nobody agrees on whether cover letters matter — including recruiters. Some never open them; some quietly use them as tiebreakers; a few treat "optional" as a test. Which means the rational strategy is: write one whenever the role is worth wanting, and make it cheap to write well.

The way to make it cheap is the same move that fixes resumes: stop writing from a blank page and start writing from the job description.

What a cover letter is actually for

It is not a prose version of your resume — the recruiter has the resume. A cover letter earns its open by answering the three questions the job description implies but the resume can't address:

1. Why this company — the one thing a tailored resume still can't say.
2. Why you, for their top requirement — not all requirements; the top one or two.
3. What's unexplained — the career change, the gap, the relocation. One sentence, matter-of-fact, before they invent a worse explanation.

If none of the three need saying, the letter can be four sentences long. Length is not effort; relevance is.

The 4-paragraph structure (under 250 words)

1. The hook: their problem, your angle (2 sentences)

Skip "I am writing to apply for…" — the ATS field already said so. Open with the intersection of their need and your proof:

"Your posting leads with taking checkout conversion seriously — that's been my last two years: a redesign that lifted conversion 12% at a marketplace doing €40M annually."

The material comes straight from the keyword extraction you already did for the resume: their top requirement, your strongest matching evidence.

2. Proof, expanded (3–4 sentences)

Take the single most relevant achievement from your resume and give it what the bullet couldn't: context, decision, outcome. Don't summarize three jobs — deepen one result. The resume is breadth; the letter is depth.

3. Why them, specifically (2–3 sentences)

The paragraph most letters fake and recruiters can smell. It must contain one fact you couldn't paste into another company's letter — their product, market, a stated value with evidence you share it. If you can't find one, that's information about whether to apply.

4. The close (1–2 sentences)

State the interest, skip the groveling: "I'd welcome the chance to talk about how I could help with [their goal]." No "I know my worth" chest-beating, no "thank you for your consideration" filler beyond one line.

The honesty rules, unchanged

Everything from resume tailoring applies with one addition: the letter and resume must agree. Same numbers, same titles, same story. Interviewers read them back to back; daylight between them reads as embellishment somewhere.

And the classic trap — the wrong company name in paragraph three — comes from exactly the copy-paste workflow this structure prevents. If every letter is generated from this job's description, there's nothing stale to forget to replace. (That's how Job SuitUp's cover letter generator works: it writes from your actual resume plus the job description you saved, so the facts can't drift — and you edit the result, because it's your name at the bottom.)

FAQ

Are cover letters still required in 2026? Required, rarely. Read, sometimes. Decisive, occasionally — and you can't predict which occasion. The 250-word version above costs ten minutes; skipping it to save ten minutes on a job you want is bad arithmetic.

How long should a cover letter be? Under 250 words, under one screen. Recruiters skim letters harder than resumes — a wall of text is a reason not to start.

Should I use AI to write my cover letter? To draft — yes, if it's drafting from your real resume and this job description rather than hallucinating enthusiasm. To send unread — no. Generic AI letters have a recognizable smell, and the fix is the same as ever: specifics only you could claim, verified by you.

Do I repeat resume bullets in the letter? Reference, don't repeat. Pick one achievement and add the story around it; a letter that lists four bullets verbatim wastes its only advantage over the resume.